Looking at the photo you'd be looking at a bit over 11mm over a bit over 11 threads which would be more like 1mm pitch. I'd guess as scotty said above.
Type: Posts; User: gadgetman
Looking at the photo you'd be looking at a bit over 11mm over a bit over 11 threads which would be more like 1mm pitch. I'd guess as scotty said above.
Measure the threads only, peak to peak, or trough to trough, not to the shoulder. Do it over the greatest span of threads you can.